Generally speaking, sealing an asphalt driveway approximately every 3 to 5 years is normal. But there are several factors which can vary that approximation.
Is it a spray application, or a squeegee application? How many coats are being applied?
Is it a quality product?
How detailed was the preparation or cleaning of the asphalt done prior to applying the sealer?
How much traffic is there on your driveway?
How much exposure to the sun does the driveway have?
These are just some of the factors that can determine the life of a good sealcoat job. Be careful not to seal the driveway too frequently as that can cause more damage than good.
Watch our series “The Most Common Ways Asphalt Repair, Maintenance and Sealcoating Contractors Rip Us Off and How To Avoid Them" and see why sealing to frequently can cost you more money in the long run.